/*
 * Tencent is pleased to support the open source community by making Angel available.
 *
 * Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in 
 * compliance with the License. You may obtain a copy of the License at
 *
 * https://opensource.org/licenses/Apache-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 *
 */


package com.tencent.angel.ipc;

/**
 * Interface for receiving asynchronous callbacks. For each request with an asynchronous callback,
 * either {@link #handleResult(Object)} or {@link #handleError(Exception)} will be invoked.
 */
public interface Callback<T> {
  /**
   * Receives a callback result.
   *
   * @param result the result returned in the callback.
   */
  void handleResult(T result);

  /**
   * Receives an error.
   *
   * @param error the error returned in the callback.
   */
  void handleError(Throwable error);
}